Freelander Body Repair Manual — part 21
RESTRAINT SYSTEMS
DESCRIPTION AND OPERATION
13
Seat belt pretensioners
During a frontal collision the seat belt pretensioners
tighten the front seat belts to ensure the occupants
are securely held in their seats. A pretensioner is
integrated into the buckle assembly of each front
seat belt.
The two pretensioners are handed, but otherwise
identical. Each pretensioner has a tube containing
propellant and a piston. The piston is attached to a
steel cable, the opposite end of which is attached to
the seat belt buckle. An igniter (squib) in the base of
tube provides an ignition source when triggered by a
fire signal from the airbag ECU. A fly lead with a 2
pin connector links the igniter to the vehicle wiring.
On receipt of a fire signal from the airbag ECU, the
igniter ignites the propellant. The burning propellant
rapidly produces nitrogen gas that drives the piston
along the tube, pulling on the cable and drawing the
buckle towards the buckle assembly fixing point on
the seat.
SRS warning lamp
The SRS warning lamp provides system status
information for the driver. The lamp consists of a
bulb behind a red SRS graphic at the base of the
tachometer in the instrument pack. The bulb is a
serviceable item that can be renewed from the rear
of the instrument pack.
Seat belt pretensioner components
1. Seat belt buckle
2. Gaiter
3. Steel cable
4. Fixing
5. Igniter
6. Fly lead
7. Vent
8. Tube
RESTRAINT SYSTEMS
14
DESCRIPTION AND OPERATION
Rotary coupler
The rotary coupler is installed on the steering
column to provide the interface between the fixed
wiring harness and the moveable driver airbag
module and horn buttons on the steering wheel.
A rotating link harness is encapsulated into a plastic
cassette comprising outer and inner housings with
integral connectors. Screws attach the outer housing
to the steering column switch assembly and the
inner housing is keyed to the steering wheel by its
connector. The inner housing can turn a maximum
of six revolutions in relation to the outer housing. For
maintenance purposes the outer housing
incorporates a position indicator wheel; a white tab
is visible on the wheel when the rotary coupler is
centralised. To prevent breaking the rotating link
harness, both the steering and the rotary coupler
must be centralised when removing and installing
the steering wheel.
Rotary coupler components
1. Fly lead (to airbag module)
2. Outer housing
3. Position indicator wheel
4. Inner housing
RESTRAINT SYSTEMS
REPAIRS
1
SEAT BELT - FRONT - 3 DOOR
Service repair no - 76.73.13
Remove
1. Remove seat base finisher.
See BODY, Seats
and seat belts.
2. Remove body side rear trim casing.
See
BODY, Interior trim components.
3. Remove 2 Torx bolts securing seat belt lower
mounting and remove mounting from seat belt.
4. Release seat belt retaining strap.
5. Remove cover from upper mounting.
6. Remove Torx bolt from upper mounting.
7. Remove bolt from seat belt reel and remove
reel.
Refit
1. Position reel and tighten bolt to 31 Nm.
2. Extend belt, position top mounting and tighten
Torx bolt to 31 Nm.
3. Fit top mounting cover.
4. Secure belt retaining strap.
5. Fit lower mounting to seat belt, position
mounting, fit and tighten Torx bolts to 40 Nm.
6. Fit trim casing.
See BODY, Interior trim
components.
7. Fit seat base finisher.
See BODY, Seats and
seat belts.
RESTRAINT SYSTEMS
2
REPAIRS
SEAT BELT - FRONT - 5 DOOR
Service repair no - 76.73.13
Remove
1. Remove seat base finisher.
See BODY, Seats
and seat belts.
2. Remove ’B/C’ post upper finisher.
See BODY,
Interior trim components.
3. Release seat belt retaining strap.
4. Remove nut from seat belt upper mounting.
5. Remove bolt from seat belt reel and remove
reel.
Refit
1. Position reel and tighten bolt to 31 Nm.
2. Extend belt, position top mounting and tighten
nut to 31 Nm.
3. Secure belt retaining strap.
4. Fit ’B/C’ post upper finisher.
See BODY,
Interior trim components.
5. Fit seat base finisher.
See BODY, Seats and
seat belts.
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